Seven weeks after a massive earthquake struck Alaska, the seemingly endless aftershocks are keeping many residents filled with anxiety.

There have been more than 7,800 aftershocks since the main earthquake struck Nov. 30 just north of Anchorage. Most were too small to feel, but 20 have had magnitudes of 4.5 or greater -- including a magnitude 5.0 jolt last Sunday.

Seismologists expect the temblors to continue for months, although the frequency has lessened. Aftershocks from the 1994 Northridge earthquake in Los Angeles, which struck 25 years ago Thursday, also rumbled for months and, like Alaska, were too small to be felt.

Mental health providers say they still treat clients rattled by the aftershocks, which strike without warning or any apparent pattern. Deborah Gonzales, a licensed clinical social worker in Anchorage, says the temblors can be overwhelming for people, making them feel emotionally out of control.

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